<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
<div id="game-panel">
    <div class="top-bar" id="notify">
        <div id="time">时间：</div>
        <div id="score">分数：</div>
        <div class="desc">操作： 左← 上↑ 右→ 下↓</div>
    </div>
    <div id="checkerboard">
    </div>
    <div class="bottom-bar">
        <button id="play" title="可按空格键开始">开始</button>
        <label for="difficulty">
            模式：
            <select name="模式选择" id="mode">
                <option value="normal" selected>正常</option>
                <option value="unlimited">无限</option>
                <option value="throughWall">穿墙</option>
            </select>
        </label>
        <label for="difficulty">
            难度：
            <select name="难度选择" id="difficulty">
                <option value="500" selected>初级</option>
                <option value="200">中级</option>
                <option value="100">高级</option>
                <option value="20">终极</option>
            </select>
        </label>
    </div>
</div>
<script src="index.js"></script>
</body>
</html>
